Ãâó : https://blogattach.naver.net/be2ba2196c5b3384ac4d2b1a24c2b5c0643f5e/20190529_149_blogfile/pretori22_1559113762373_56v3W9_pdf/%B1%B3%BF%DC%C3%BC%C7%E8%C7%D0%BD%C0%BA%B8%B0%ED%BC%AD-%B1%B3%BF%DC%C3%BC%C7%E8%C7%D0%BD%C0%BA%B8%B0%ED%BC%AD%BE%E7%BD%C4-%C7%C1%B8%AE%C5%E4%B8%AE.pdf